MARIN COUNTY, CA --
Health officials in Marin County are investigating a suspected case of whooping cough at Terra Linda High School.SIGN-UP: Get breaking news sent to you
Officials sent out letters to parents saying a student in the junior class was diagnosed with the highly contagious disease on March 20th, even though she had been vaccinated at a younger age.
Officials say no other cases have been reported in the county.
Whooping cough affects the respiratory system, and can cause serious illness in children and adults.
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